/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtScxml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/


import QtQuick 2.5
import QtQuick.Window 2.2
import TrafficLightStateMachine 1.0

Image {
    id: lights

    property alias button: button
    property TrafficLightStateMachine stateMachine

    source: "background.png"

    Column {
        y: 40
        spacing: 27
        anchors.horizontalCenter: parent.horizontalCenter

        Image {
            id: redLight
            opacity: 0.2
            source: "red.png"
        }

        Image {
            id: yellowLight
            opacity: 0.2
            source: "yellow.png"
        }

        Image {
            id: greenLight
            opacity: 0.2
            source: "green.png"
        }
    }

    Button {
        id: button

        anchors.right: parent.right
        anchors.bottom: parent.bottom
        anchors.margins: 20
        source: "pause.png"
    }

    states: [
        State {
            name: "Red"
            when: stateMachine.red

            PropertyChanges {
                target: redLight
                opacity: 1
            }
        },
        State {
            name: "RedGoingGreen"
            when: stateMachine.redGoingGreen

            PropertyChanges {
                target: redLight
                opacity: 1
            }

            PropertyChanges {
                target: yellowLight
                opacity: 1
            }
        },
        State {
            name: "Yellow"
            when: stateMachine.yellow || stateMachine.blinking

            PropertyChanges {
                target: yellowLight
                opacity: 1
            }
        },
        State {
            name: "Green"
            when: stateMachine.green

            PropertyChanges {
                target: greenLight
                opacity: 1
            }
        }
    ]
}